Bridging planets and stars using scaling laws in anelastic spherical shell dynamos. Issue Volume 9:Issue S302(2013) (7th August 2014)

• Record Type: Journal Article
• Authors: Yadav, R. K.; Gastine, T.; Christensen, U. R.; Duarte, L.
• Editors: Petit, Pascal; Jardine, Moira; Spruit, Hendrik C.
• Is Part Of: Proceedings of the International Astronomical Union. Volume 9:Issue S302(2013)
• Page Start: 174
• Page End: 175
• Publication Date: 2014-08-07
• Subjects: stars: low-mass, -- brown dwarfs, -- stars: magnetic field, -- convection, -- methods: numerical; Astronomy -- Congresses; Astronomy -- Periodicals; 520
• DOI: 10.1017/S1743921314002002
• Languages: English
• ISSNs: 1743-9213

Abstract

Abstract: Dynamos operating in the interiors of rapidly rotating planets and low-mass stars might belong to a similar category where rotation plays a vital role. We quantify this similarity using scaling laws. We analyse direct numerical simulations of Boussinesq and anelastic spherical shell dynamos. These dynamos represent simplified models which span from Earth-like planets to rapidly rotating low-mass stars. We find that magnetic field and velocity in these dynamos are related to the available buoyancy power via a simple power law which holds over wide variety of control parameters.